Wing assembly for road graders



Oct. 25, 1960 P. w. GRABOW 2,957,256

WING ASSEMBLY FOR ROAD GRADERS Filed April 16. 1958 2 Sheets-Sheet 1Paul I4. Grabow INVENTOR.

y zim Oct. 25, 1960 P. w. GRABOW WING ASSEMBLY FOR ROAD GRADERS 2Sheets-Sheet 2 Filed April 16, 1958 Paul W. Grabow INVENTOR.

1 BY Mm!- nited States Patent WING ASSEMBLY FOR ROAD GRADERS Paul W.Grabow, Twin Brooks, S. Dak.

Filed Apr. 16, 1958, Ser. No. 728,929

1 Claim. (Cl. 37-155) This invention relates to earth moving equipmentand more particularly to a wing assembly for road graders.

An object of the invention is to provide a smoothly operative andconveniently used wing assembly for a road grader, the wing assemblybeing capable of adjustment by the operator of the grader withoutleaving his seat.

There have been prior adjusting devices for moldboards and other earthmoving attachments or equipment. This invention differs from any othersby being of exceedingly simple construction but yet capable ofperforming the necessary adjusting operation with ease and facility.

The invention centers largely about a novel structural organizationincluding a support beam that has a guiding rib along one edge, the ribpassing through a guide sleeve and adapted to be locked to that guidesleeve which is carried by a part of the road grader. The locking isachieved by a locking pin operated by a pull rope, cable, etc. whose endis at the seat of the grader. The locking pin can be manipulated againstthe opposing yielding bias of the spring and withdrawn from one of themany openings in the centering rib. Then the force generated by movementof the grader and the soil, gravel, etc. that is being moved andreacting on the blade, slides the beam to a new position established bythe next opening in the rib. The locking pin automatically snaps intothat next opening thereby setting the blade in a new position. Shouldthe operator wish to set the blade in another position, he merely pullsthe cord, cable, manipulates a lever, etc. in order to retract the pinfrom its new seat so that the same operation may take place. To adjustthe blade in the opposite direction, the grader is moved backward or theblade is manually reset.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure l is a top view of a typical road grader and having a wingassembly thereon constructed in accordance with the invention.

Figure 2 is an elevational view of the beam that partially supports theblade of the wing assembly.

Figure 3 is a sectional view taken on the line 33 of Figure 2;

Figure 4 is an enlarged sectional view taken on the line 4-4 of Figure1.

Figure 5 is a longitudinal sectional view through a part of the sleeveand beam assembly.

Figure 6 is a view partially in elevation and partially in sectionshowing the sleeve within which the beam is mounted.

In the accompanying drawings there is a typical road grader 10. This isstandard equipment. Wing assembly 12 is mounted on the road grader andon the right side thereof. The road grader could be equipped withanother Wing assembly on the left side or could be equipped with a wingassembly only on the left side, these being variations that fall withinthe invention.

Wing assembly 12 is made of a blade 14 having the inner end thereofmounted on a vertical pivot 16. The vertical pivot is attached to theroad grader 10 between the front wheels 18 and the intermediate wheels20 thereof by means of a mounting bracket 22. Mounting bracket 24 isattached to the rear surface of the blade 14 near the outer end of theblade. A vertical pivot 26 is attached to mounting bracket 24 and to thefront end of beam 28. As seen in Figure 2, vertical pivot 26 may be madeof hinge butts with a vertical hinge pin passing therethrough. The sameholds true for vertical pivot 16. Beam 28 is preferably hollow tubing orpipe and has an elongated rib 32 extending longitudinally down itssurface. This rib is rectangular in cross section and can be welded orotherwise fixed to the tubing or pipe part of the beam. It has aplurality of spaced openings 34 located in it and extending from one endof the rib to the other end. These openings are equally spaced and arepassed through passageway 36 that is formed in the top part of guidesleeve 38.

The guide sleeve is attached to mounting bracket 40, the latter weldedor otherwise secured to the aft part of the road grader 10 andprotruding laterally therefrom. Vertical pivot 42, such as a pair ofhinge butts and a vertical hinge pin, make the pivotal connectionbetween guide sleeve 38 and mounting bracket 40. The sleeve has itsmajor part cylindrical in form. However, there is a small elongatecasing 44 formed in the wall and constituting the side walls ofpassageway 36.

The casing 44 has a locking pin 48 slidably disposed therein andconstrained in its movement by being located in passage 57 that extendstransversely through both side walls of the small casing 44. The outerend of the pin 48 is attached to a lever 56. The lower end of the leveris mounted on an ear 52, this being fixed to the side wall of guidesleeve 38. The upper part of the lever 50 has a pull rope or cable 56secured to it. The intermediate part of the lever 59 has a spring 58 orcorresponding yielding device, mounted on it, as by being on a centeringpin. The opposite end of spring 58 is disposed in a small recess inbracket 60, the latter fixed to casing 44 and having sides between whichthe lever is adapted to rock. The bias of spring 58 is in a direction tokeep pin 44 engaged in one of the openings 34. Therefore positive forceis necessary to move the pin 48 in a direction to separate it from theopening 34, and after the positive force is relaxed, spring 38 pushes onthe lever 50 in a direction tending to return the pin 48 into one of theopenings 34.

Cable 56 is reeved under an idler pulley 62 that is mounted on bracket40. The cable is reeved over pulley 64 at the top of a standard 66 whichrises from bracket 40. Pulley 64 is used merely for directing the cable56 toward the seat of the grader 10. The cable can be attached to an eyeon or near the seat or to a lever 68 to facilitate the operation of thepull cable or rope.

In use the pulling of the pull cable or rope will cause the pin 43 to bereleased from the hole 34 that it is at that moment occupying.Thereafter the blade 14 will be moved rearwardly due to pressure appliedthereon or friction generated by the blade scraping on a comparativelystationary object or objects. This will correspondingly move the beam 28rearwardly in its guide sleeve 38 until the second position isestablished by pin 48 snapping into the next opening 34 or to anysubsequent opening in accordance with the desires of the operator.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those V 3 skilled in the :art, it is not desired tolimit the invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

A side wingassembly for a road scraper comprising anelongated'bladehaving an inner end, a hinge bracket on the inner end of said bladeattachable to a 'road 'groader and having a vertical pivot on whichsaidblade is swingable laterally, means for retaining said blade inlaterally swung positions comprising a beam having one end pivoted tosaid blade for swinging of said blade laterally and for longitudinaladjustment thereof in response to lateral swingingof the blade, a guidesleeve for said beam through which said beamis longitudinally slidablyadjustable, a hinge bracket on said sleeve attachable to a road scraperand on which said sleeve is swingable laterally to compensate forlateral swinging of the beam, and means for releasably locking the beamto the sleeve in different longitudinally adjusted positions of the beamcomprising a longitudinal rib on said beam having longi- 4 tudinallyspaced apertures therein, a locking pin slidable on said sleeve into andout of a selected aperture in the rib into and out of locking positionand spring loaded for sliding into locking position, a lever pivoted onsaid sleeve and to said locking pin for operation to move said lockingpin into unlocking position, and manual means for operating said leverfrom a drivers seat of a road grader, said manual means comprising astandard on the second named hinge bracket, upper and lower pulleys onsaid standard and second named hinge bracket respectively, and a cableattached to said lever and trained around said pulleys.

References Cited in the file of this patent UNITED STATES PATENTS

